Hamilton continues to dominate in Spain

Ahead of today's second free practice session the air temperature is 24 degrees C, while the track temperature is 44 degrees.

Tyre choices this weekend are hard and medium whilst the two DRS zones are on the main straight and on the shorter back straight between Turns 9 and 10.

The big news is that following the electrical issue which sidelined him after just four laps this morning, Sebastian Vettel will take no further part in today's activity, his team needing to replace the wiring loom damaged earlier.

To add to the German's frustration, while teammate Daniel Ricciardo was able to finish third quickest this morning he was 0.950s off pace-setter Lewis Hamilton's time, the Mercedes driver clearly having a lot more in reserve.

As Sutil sits at the back of the Sauber garage chatting with Giedo Van Der Garde, Alonso is shown still really wrestling with the Ferrari.

Twenty-five minutes into the session Maldonado and Ericsson are the first to switch to the option (medium) rubber. Despite almost tripping up over the Caterham, the Lotus driver subsequently improves to fourth with a 27.866.

Once again Chilton is told of a problem with his car, the youngster told not to use full throttle.